Process of and furnace for burning wet vegetable



(No Model;) 3 Sheets-Sheet 1.

L.'P. RIDER.

PROCESS OF AND FURNACE FUR BURNING WET VEGETABLE, ANIMAL, 0R MINERAL MATTER.

Patented No. 352,662. V. 16, 1886 (No Model.) 3 SheetsSheet 2.

L. T. EIEEE. PROCESS OF ND FURNACE EOE BURNING WET VEGETABLE, ANIMAL,

' 0R MINERAL MATTER.

No. 352,662. Patents V116, 1886,

A fro/mm N. PETERS. Pholo-Lnlmgmphcr, Waahmglon. n.c.

3 shets sheet s.

(No Model.)

L. P. RIDER. PROCESS OF AND FURNAGE FOR BURNING WET VEGETABLE, ANIMAL,

0R MINERAL MATTER.

' Patented Nov. 16, 1886.

III/VE/VTOR Arm/mus Z N. PETERS. Pholo-blhcgmpher. Wilslullglon. D. cv

UNITE STATES Prion.

PATENT LEMAN 1; RIDER, OF PITTSBUBG, PENNSYLVANIA.

PROCESS OF AND FURNACE FOR BURNING WET VEGETABLE, ANIMAL, OR MINERAL MATTER.

SPECIFICATION forming part of Letters Patent No. 352,662, dated. November 16, 1886.

Application filed March 24, 1886.

To aZZ whom it may concern: Be it known that I, LEMAN P. RIDER, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Processes of and Furnaces for Burning \Vet Vegetable, Animal, or Mineral Matter; and Ido hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 7 a

The invention relates to the process of and a furnace for burning wet or green vegetable, animal, or mineral matter for generating steam, and for other heating purposes.

The invention will be hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, which form a part of this specification, Figure 1 represents a vertical longitudinal section; Fig. 2, a side elevation; Fig.3, a cross-section on line 00 00, Fig. 1; and Fig. 4, an enlarged perspective view of one of theside doors of the furnace.

In practicing my invention the matter to be burned, whether vegetable, animal, or mineral, is deposited in the furnace in coniform heaps or piles, with their bases resting upon suitable grate-bars; Preference is given to the shaking-bars shown and described in Letters Patent of the United States granted to me January 23, 1877, No. 186,436; July 17, 1877, Nos 193,180 and 193,181; but any efficient and practical bars will answer the purpose. The fuel is fed alternately through suitable openings arranged in parallel rows in the crown of the furnace; a pile having been deposited on one side of the furnace, the next is fed through an opening diagonally opposite to the one through which the first was fed, and this operation is continued until all of the charges are deposited.

Reference being had to the drawings and the letters marked thereon, A represents the furnace, which is provided with a movable or shaking grate, B, the end bars, a b, of which are removable by being withdrawn from the forward and rear ends of the furnace. The said bars rest in slots or bearings c d, supported by the masonry. The crown of the furnace is arched, and constructed of brick Serial No. 196,434. (No model.)

laid with their ends exposed to the products of combustion, as shown in cross-section in Fig. 3.

Above the furnace is a series of hoppers, 0, arranged in parallel rows,which communicate with the furnace and are provided with covers 6 and'valves f, through which fuel is supplied.

D represents a bell-mouthed opening in the front wall of the furnace, and g a branch or nozzle leading from a pipe, E, for supplying gas, when it is convenient for use, to heat the walls of the furnace preparatory to supplying the wet or green fuel. WVhen gas is not available, ordinary fuelsuch as wood or coalis used for heating the furnace.

On each side of the furnace are arranged doors F, which are on the same or nearly the same vertical plane with the hoppers O, and afford access to the interior of the furnace through, the openings G, to remove any unconsumed matter that will not pass through the grate-bars. The cleaning of the furnace is also expedited by the removal .or withdrawal of the end bars, a b, by which much of the ashes and other matter can be drawn off' into the ash-pit.

The doors F consist of a frame, h, of wrought or cast metal, which is filled with fire-brick and crossed by a bar, z, to which is pivoted, at j, an arm, 70, and the upper end of said arm is clamped to a projecting stud, Z, by a nut, m. The arm is is provided with a slot, a, by which it adjusts itself to the closed or open position of the door.

H is a casting, upon the lower front side of which is formed a horizontal flange, 0, upon which the door rests, and from said flange and at right angles thereto projects a flange, p, to prevent the door from being displaced laterally. Toprevent the admission of air to the furnace through the side openings, G, the doors F, when closed, are sealed with clay. The upper surface of the flange p is corrugated, as shown, and each corrugation forms a seat or support for the iron bar used to stoke the fire. The castings H are secured to and held in position against the masonry by clamping-plates I, which in turn are secured to the masonry by bolts or tie-rods in the usual manner.

In the rear of the ash-pit is a vault, J, through which access is had to withdraw the short bars a of the grate.

K is a combustion-chamber, the crown of V of the chamberis raisedconsiderably above.

which is arched andin the same horizontal plane as thatof the furnace A; but the-bottom the bottom of the furnace, and the area of the combustion-chamber in cross-section is equal to about one-third (i) of that of the furnace. By this construction theproducts of combustion are retarded in their passage through the combustion-chamber and a thorough mingling of the gases effected. r

Immediately in the rear of the combustionchamber is a working-chamber, L, which may be utilized to consume fuel, garbage, or other waste material; orit may be used as a metallurgical furnace. The Side walls of this chamber are provided with openings G and doors H, of the same constructionas those applied to thefurnace, and. the bottom of the chamber is constructed of masonry. Hoppers C are 20.

also provided for supplying fuel to said chamber.. .1 L.

In the rear of the chamber L, and forming an outlet therefrom, is a throat or flue, M, which communicates with the stack N; or by closing the damper O, which is operated by a lever, q, and opening the sliding gate or. damper P,

the products of combustion may be conducted.

through a flue, Q, to a steameboiler, R, and be passed through .the-flues' thereof to generate steam. 1m v .j

The draft of the furnace is controlled by the damper O'andthe steam-jet. from .the' pipe r, which terminates in 'the stack N, and is pro- 'vided with a regulating-val ve, s. .or chamber to receive ashes or the sweepings P is a vault from the boiler fire tubes or flues, and is provided with a suitable door (not shown) for in.- gress and egress. The. operation is substantially as follows: The furnace A isheated by gas or other fuel, and when sufiiciently hot the wet or green vegetable, animal, or mineral fuelis charged into the hopper O, the covers e replaced, and

the valve f of oneof the "hoppers withdrawn, when the contents of the hopper will be discharged into the furnace and assume the form a of a cone, with its base resting upon the gratebars. A hopper diagonally opposite the one first discharged is now opened and its charge deposited in like manner, the fuel thus being deposited out of the lineof the draft of the preceding charge. This operation is repeated until all of the hoppershave been discharged into the furnace, when they are refilled and the same operation continued. charges from the hoppers falling upon the grate-bars or the bottomgof the furnace and assuming the forms of cones or pyramids, theirv bases will extend out into contact with each other, and in this form the vapors and gases of the wet or green fuel are rapidly driven off. The air supplied to the furnace is admitted onlythrough the grate and against the bases .of the coniform piles of fuel, entering the body.

thereof, passing upward through the masses,

. and entirely enveloping the outer surfaces of The several a thoroughly intermingled by their passage through said combustion-chamber. The products of combustion are then utilized in the working-chamber L for consuming garbage or other fuel, or for other heating purposes. From the chamber L the products of combustion are conducted to a steam-boiler, R; or they may be permitted to escape through the stack N. .When the products from the furnace A are utilized for consuming garbage or other waste matter in the chamber L, the combustion of said matter is effected entirely by surface action, as no air is admitted to said chamber, and the result isa perfect incineration of the matter charged into said chamber.

In the operation of burning wet fuel-such garbage, bagasse,or tan-bark-the steam arisingtherefrom is decomposed, mingled with the gases, and burned, thus utilizing all the available combustiblematter'contained in the .fuel. 1

In another application, renewed March 6, 1886, No. 194, 358,1' have claimed the process of burning fuel in the furnace shown, and also some of the features of its construction, and do not, thereforeyherein claim such matter.

Having thus fully described my invention, .what I claim is-.- y

1. a The process of burning wet or green fuel, garbage, &c., which consists in depositing said matter in coniform piles in a close chamber from which atmospheric air is excluded, and to vwhich the products of combustion from a furnace are admitted, and surrounding the exposed surfaces of the fuel with said products of combustion, substantiallyas described.

;2. The combination of a furnace, a close working-chamber from which atmospheric air is excluded, and provided with a series of parallel chargingopenings through its crown, and acombustion-chamberbetween the furnace and the working-chamber, which forms the only channel through which gases are admitted to the working-chamber, substantiallyas de scribed.

p 3. The combination of a furnace, a close working-chamber from which atmospheric air is excluded, and provided with a series of parallel charging-openings throughthe crown, and side openings having doors for-sealing the same, and a combustion-chamberintermediate of the furnace and the working-chamber, which forms the only channel through which gases are admitted to the working-chamber,

substantially as described." a l 4. The combination of a furnace, a workingchamber, and a combustion-chamber interme:

diate of the two, and the crowns of all of said 7. In a furnace, a plate provided with a parts arranged on the same plane, substanplane horizontal flange and a. corrugated V61; I 5 tially as described. tical flange, in combination with asliding door,

5. The combination of a furnace, a combussubstantially as described. 5 tion-chamber, a working-chamber, a flue or In testimony whereof I affix my signature in passage leading therefrom, a gate or valve conpresence of two witnesses. trolling said flue, and a steam-generator, sub; V stantially as described. LEMAN P. RIDER.

6. A furnace-door consisting of an open me- 10 tallic frame filled with fire-brick, and a bar Witnesses:

crossing the frame, in combination with an JAMES J JOHNSTON, arm and a clamping device, substantially as WM. E. DYRE. described. 

